Improvement in flasks pob casting tuyeres



. I @uitrit glatte-@stent @fitta i BEN EVILLE C. PAINT-ER, OF' MECHNICSBURG, PENNSYLVANIA.

LettersPate'nt No. 70,740, dated Nwember I2, 1867.V

IMPROVEMENT IN ILASKS IOR CASTING Tll'ES.

iiite Metri: trium: 11i-intim @zum 33mm imi making rari rt its same.

To ALL WHoM 1T MAY ooNonRN:

Be it known that I, BENEVILLE C. PAINTER, of Mechanicsburg, in the county of Cumberland, and State of Pennsylvania, have invented certain new and useful Improvements in Flasks or Moulds for Casting Tuyeres;

and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, making apart of this specication, in which- Figure 1 represents an elevation of one of the sides of the mould-or iladsk. Figure 2 represents a longitudinal verticalsection through the same. o Figure 3 represents a top plan of the mould or ask with the pattern in place, and as it appears when the upper section is removed; and I Figure 4 represents a vertical transverse section through the mould. Similar letters of reference,- where they occur in the separate figures, denote like parte in all of the drawings. l From the irregular form and shape of a blacksmiths tnyere it is extremely diicult to mould and cast it in one piece, requiring great care, very large flasks, and an unusual amount of ramming of sand around the pattern and in the mould or ask, so much so as to make these tnyeres very expensive. The object and purpose of my invention is to expedite and cheapen the expense of moulding tuyeres; and to this end I have invented a mould o'r ask, which I will explain, by which I reduce the cost of moulding and casting to one-half of the cost as heretofore practised; and my invention relates to this mould or flask, which I shall now describe.

The mouldor flask is composed of three sections, AB C, one overlying the other, as shown in the drawings.-

In addition to these three sections there is a false bottom, D, in the middle section, which is quite material, and a cover, E, which is not so material to the result. There is also at one side and end of the middle section B a slide, F, which closes an opening through which the pipe G is moulded into the ask and'united to the body of the tuyere by the molten metal owing around it, and H is a support for holding this pipe G, which is previously vcast, and which in the nished tuyere becomes the channel for the introduction of the blast into and through4 the tuyere. v A

To mould the tuyere in this ask I proceed as follows: The sections are separated, and the pattern J and L being placed ou a follow-board, the central section B is now placed over the patternvJ and L, and this central section has a partition, K, across it and dead space outside of it. When this central section is rammed up over the pattern L with moulding-sand to the height of the partition K, the false bottom D is inserted through the openings inthe sides of the middle section, which bottom is held and rmly supported-by cross-pieces b b. The false bottom being thus in place, the ramming proceeds aroundthe pattern J, and at the properA height thereon, where the tube G is to be united to the body of the tuyere, a conical ferrule, c, ils introduced, by means of which the molten metal is allowed to ow aroundthe end of the tube and thus fasten it -to the body of the tuyere, as follows: The ferrule c is put on the tapered Aend of the tube G, 'as shown in g. 4, and adjusted to the pattern J, through a hole in section B at' the end ofY the slide F, and it is then rammed into the top ofthe pattern J. The lower section A, which has a partition, I, across it, and dead space outside of that partition, is now placed on thecentral section and rammed around and over the bottom and end of pattern J, as seen at a a, gs. 2 and 4, and which, when cast, becomes the body of the tuyere. The two sections now rammed up are inverted,

the section A becoming the lower one, and section B on top of it. The section C is then placed on section B, andA rammed up, with suitable channels in it to receive the fluid metal. Section is then lifted o from section B, and the, pattern L (forming what in the finished tuyere may be termed the valve-trunk or air-trunk for supply ing draught to the lire, enough to keep it alive when the blast is of?) is then taken out. Section B is then lifted oli' from the lower section A, leaving the pattern J on the lower section. The ferrule c is' then taken out'by pnshing'the tube G, resting on its support H, inward a distance equal to the thickness of the metal when cast.

The ferr-uic c is then drawn off from the end of the tube from the inside. The sections now may be put together .and properly united by hooks, clamps, or otherwise, and the4 molten metal can be poured into the mould. The

metal flowing around unites the`tube to the body of the tuyere. When the inished casting is to be removed, the slide F must be removed from its section to allow the tube -which projects from the flask to pass out. Itis, of course, understood that suitable cores are used to cast the tuyere hollow for the admission of air through it,

and with an opening below through which it maybe cleaned out, and that the sections are furnished with suitable guides, by which they are matched or put together. l i

Having thus fully describedmy invention, what I claim therein as new, and desire to secure by Letters Patent, isi 1. In combination with the sections A B of the usk, the partitions I Knnd fa-lse or removable bottom D, arranged as and fox'` the purpose described.

2. I also claim, in combination with the previously-made tube Gr, the fe'rrule c and slide F inthe section B, for the purpose of moulding in the tube and removing the finishedcnsting from the flask? substantially as described.

B. 0. PAINTER.

Witnesses:

-JAMss K. PALMER,

'JOSEPH LEAs. 

